Oceana and Adonia are by far the most spectacular additions to the fleet. The Atrium is awesome and not the least bit tacky or tasteless, and there is extensive (faux) wood panelling and sumptous carpeting throughout. But they are also the most poorly designed with regard to people flow - the theatre seats LESS people than Aurora and Oriana's, and yet there are MORE passengers. You can always be assured of spectacular west end shows on P&O, but the theatre can only accomodate passengers from one restaurant on a given night, so each show must be repeated FOUR times (twice for each sitting, then twice for again for the other restaurant on a different night). For the passsenger this equals LESS choice and HALF as many shows as on the other ships.
Aurora and Oriana have two main decks of public rooms, Oceana and Adonia only have ONE. This means the lounges are fewer and more crowded - this is very true, especially Yacht and Compass and Tiffany's. Avoid Y&C when the theatre is filling/emptying, because everybody just piles through.
There is no Crows Nest and no Andersons, which fans of these rooms will miss. The sun deck buffet restaurant is always overcrowded (never enough seats). Check out the main restaurants and Cafe Jardin for breakfast and lunch instead. The ship could do with more dance venues.
Captains cocktail party is held in the Atrium, but sadly you do not get photographed with him.
Lastly, this may not be the case on every cruise, but on ours the main swimmming pool was closed and the exterior of the ship was never washed. The windows were so filthy that some you could barely see out of, and they remained that way for the entire duration of the cruise. Inside the ship is fine, spotlessly clean, but a little worn in places.
Cabins are nicely appointed but on the whole smaller than the fleetmates. A whoppping 70% do have balconies however, even in the outside twin grades.
Travel operator:
P&O